yea i agree sounds like the dump tube is to small..on my 4mil stck cyl ive got my dumps and mains 116 and clip in middle with a 52 pilot and is tuned in perfect..my powerjets 1 turnout from closed,when its chilli out side 2 turns out..air screw is at 1 1/2 turns..my elevation is 1000..hope this helps..